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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2015-2502

Microsoft Internet Explorer Memory Corruption Vulnerability

KEVHIGH 8.8EPSS 51.0%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Microsoft Internet Explorer 7 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Memory Corruption Vulnerability," as exploited in the wild in August 2015.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
51.00% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Listed 13 April 2022 · due 4 May 2022
Weakness
CWE-787
Affected
microsoft/internet explorer
Source
secure@microsoft.com
EPSS trend
0%28%55%30 October 2026: 51.00%30 October 202630 October 2026

EPSS 51.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2015-2502

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.